The Screw,shoulder, cataloged under National Stock Number 5305-01-075-7086, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-075-7086 |
| Primary Part Number | HT4008-4-15 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 1.319 INCHES MINIMUM AND 1.366 INCHES MAXIMUM IN |
| Shoulder Length | 0.828 INCHES MINIMUM AND 0.848 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | 23-112,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HT4008-4-15 PRIMARY | Huck International, Inc (USA) |
| HT4008-4-15 | Hi-Shear Corporation (USA) |
| ST3M496-4-15 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M496-4-15 | Hi-Shear Corporation (USA) |
| HT4008-4-15 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M496-4-15 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4008-4-15 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M496-4-15 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| HT4008-4-15 | 5/9 Secondary reference U.S. Government activity |
| HT4008-4-15 | 5/2 Secondary reference U.S. Government activity |
| ST3M496-4-15 | 5/2 Secondary reference U.S. Government activity |
| ST3M496-4-15 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-075-7086 is a Screw,shoulder, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-075-7086 has 8 manufacturer part numbers on file: HT4008-4-15 (Huck International, Inc), HT4008-4-15 (Hi-Shear Corporation), ST3M496-4-15 (The Boeing Company Div Defense), ST3M496-4-15 (Hi-Shear Corporation), HT4008-4-15 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for HT4008-4-15: Fastener Length: 1.319 INCHES MINIMUM AND 1.366 INCHES MAXIMUM IN; Shoulder Length: 0.828 INCHES MINIMUM AND 0.848 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.